It is located on the Southern Railway of Vancouver Island mainline.

[1] The current station building was built in 1912 by the Esquimalt and Nanaimo Railway, replacing the original station which extended somewhat further south.

[3] Duncan Station closed on March 19, 2011, when Via Rail suspended service indefinitely due to poor track conditions and was replaced with a bus service operated by Via Rail.

On August 12, 2011, the bus service ended with station closing.

The station is now used as the site of the Cowichan Valley Museum.